Some scientists do not agree that AGW is a real concern, and that is fine. We are allowed to have our opinions, and if those are based on some personal science based reason then all the better (say rather than just believing something because Trump or Fox News or a religious text said it is so).
However in the subject of man made climate change the vast (as in high 90%) majority of qualified scientists have been telling us for decades now that we have a problem re AGW.
So a few dissenting voices to all that peer reviewed science is not enough to prove it wrong. That is the opposite to how science works, as you need that peer review discipline to actually prove your science is correct.
Talarin posts here and knows the science very well (better than I do for sure) and does not think AGW is as big a concern as most of the reports on the topic describe. His contribution is excellent and always interesting, many of you throwing out personal opinions (and not much else credible) could learn a thing from his contributions to these threads.
If you want to be taken seriously, and have your opinions taken seriously, you need to conduct yourself seriously and behave in as professional manner as possible. Life is just like that (and rightly so).
One of the biggest issues in this debate is around the basic understanding of what AGW is and what general historic climate change is, as they are not the same. So here is an article on a pre-industrial climate change event that took place within modern man's timescale:
'Climate change may be behind fall of ancient empire, say researchers':
Dramatic shift from wet to dry climate could have caused crop failure in Neo-Assyrian empire
www.theguardian.com
And there are many other examples we have hints of and reasonable scientific evidence of climate change events causing disruption to human civilization and all before the industrial revolution (so not related to man made global warming due to burning of fossil fuels). A few quick examples:
The Aztec and Mayan civilizations, while european diseases did massive damage to their populations, they also have evidence of massive droughts causing food supply collapses.
Some of the Egyptian dynasties fell due to localised climate change events (some even made it into the stories of the Bible re plagues of pestulance etc, and there is some small acheological evidence to support these claims).
In welsh pre-history there are whole legends built around the notion of a flooded under world that ties in with the archeological evidence for the event that eventually cut the UK off from main land europe. It was a flood from the Scandinavian regions after an ice melt released a huge resovior of water that rushed down towards the lower right of the UK and flooded towns in the flat lands that were there and also on the other side of the UK in wales vast plains dissapeared under water, and we see the petrified forrests and villages still there today.
So as with the article above we see even in short time spans of human history that climate change occured and had pretty severe consequences. We also see in the geological record that climate has changed vastly during the history of the earth, higher average temps to colder (snowball earth anyone!), higher CO2 etc. All these events had nothing to do with man's actions, and the science behind all them proves that these were simply natural cycles of 'nature' (with the odd helping hand from outside of the earth re asteroid/meteor impacts on occasions etc).
All the things mentioned above did happen, can be proven by science and are not AGW (man made climate change).
What AGW is and why it is different is that it has been scientifically proven (as all the above events have been also via the discipline of science) that in the post industrial period (so over the last few hundred years) our actions have been increasing the levels of CO2 in the atmosphere. By 'actions' covers a huge range of subjects, but the science seems to prove our use of fossil fuels as the main driver in that increase. Also keep in mind the SPEED in which this increase has been measured, just a few hundred years.
Previous changes to CO2 we see evidence of in ice cores and other geological time scale measurements took place over hundreds of thousands if not millions of years. It is that SPEED of change in CO2 levels that has been concerning scientists as it has no precedent in the history of the earth, atleast not since biological life of any complexity arose.
The predictions of the scientists, many of them employed by the fossil fuel industry back in the early days of the research (like in the 50's and 60's when that research first started), was that 'bad things' would happen if we carried on increasing the CO2 levels as quickly as had been seen. The disruption to the cycles of weather and everything we view as 'stable' in the world around us to be able to exploit (like agriculture etc).
So you have to be very clear that AGW is very different from pre-industrial climate change. They both happen, they both can be proven by science, they both have similar attributes (in the case of CO2 levels etc) but they are both not related to one another.
The credible science tells us that AGW is being caused by our use of fossil fuels, that is just the scientific reality.
Now we can demonize the scientists, as we have seen done, but that does not change the facts. Science is not an opinion or belief, it mostly either is or is not, and the wide consensus on AGW is that it IS.
And the fossil fuel industry that has over recent decades spent so much money spinning lies and sowing confusion on the subject, they are the ones that actually started the first detialed scientific analysis of the situation, they just did not like what that told them (ie your product is dangerous and releases too much CO2 into the atmosphere, there will be dangerous consequences to these actions), so they created the 'false flag' information channels that most 'deniers' use to this day to try to counter the science, everything from 'paid for' science research (that does not stand the scrutiny of the peer review process) to whole oganisations that exist just to keep putting out fake news on the subject (in the uk that is in the form of Lord Lawsons 'Global Warming Policy Foundation' but you have many like it in the USA also, all doing the same thing for the same reason).
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Now this post has been too long, but it contains the important basic situation and why we all find ourselves in such threads having such conversations, so i hope you take the time to read it over once or twice